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Troubleshooting
The following table provides troubleshooting tips. The topics are arranged in the order in which they should
be executed in most situations. If you are unable to resolve the problem after following these instructions,
please contact Icron Technologies'
PROBLEM
CAUSE
All LEDs on the
• The LEX is not receiving enough
LEX are off.
All LEDs on the
• The REX is not receiving power
REX are off.
from the AC adapter.
Link LEDs on
• There is no connection between
the LEX and REX
the LEX and REX units.
units are off.
Link LED on LEX
• The host computer is not
and REX units
powered on.
are on,
Host LED on LEX
• The LEX is not connected to the
and REX units
computer (when used with the
are off.
optional LEX adapter).
• The computer does not
support USB hubs.
• The Ranger 2324/44 is
malfunctioning.
Both extenders
• The REX unit is in suspend mode.
were working,
The operating system may put
but then the
the Ranger 2324/44 in suspend
Host LED on
mode when the computer is put
the REX unit
into a Suspend/Standby state or
is suddenly
when no USB device(s) are
blinking.
attached.
Technical Support
power from the USB port or the
(optional) LEX AC adapter.
for further assistance.
SOLUTION
1. Ensure that the USB connection between the
LEX and host computer is properly installed.
2. Move the USB connector to another USB port
on the host computer.
1. Ensure that the AC power adapter is properly
connected to the REX.
2. Check that the AC adapter is connected to a live
source of electrical power. Check that the REX
power LED is illuminated.
1. Ensure that a singlemode fiber optic cable with
crossover is connected between the LEX and REX
units.
2. Connect a short fiber optic crossover patch cord
between the LEX and REX units. Recheck
operation of the system.
1. Disconnect all USB devices from the REX
extender.
2. Disconnect the LEX unit from the computer.
3. Disconnect the REX from the AC power adapter.
4. Reconnect the LEX to the computer.
5. Reconnect the REX to the AC power adapter.
6. In the Universal Serial Bus controllers section of
Device Manager, check that the Ranger 2324/44
is recognized as a "Generic USB Hub" .
1. Recover/Resume the operating system from
Suspend/Standby mode (see your operating
system's documentation).
2. Attach a USB device to the Ranger 2324/44.
11
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